Portable chimney



(KNO Model.) l L. E. (."LAWSON". l

y PORTABLE -CHIMNEY. l No. 28511Z. Paten-ted Sept. 18, 1883.

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UNITED STATES PATENT OFFICE."

LEONARD E. CLAWSON, OF SAN FRANCISCO, CALIFORNIA.

PORTABLE CHIMNEY.

r3' f Y SPECIFICATION forming part of Letters Patent No. 285,112, dated `eptember 18, 1883.

Application filed April 24, l8'c3. (No model.)

ments in chimneys; and it consists in the formation of portable sections of pottery made with inclosing metallic easings, these sections having uniting-couplings, and in connection with these sections thimbles, into which stovepipes may be inserted, all of which will be more fully explained by reference to the accompanying drawings, in which- Figure lis a vertical section of the chimney.

Fig. '2 is a section of the coupling-joint enlarged. Fig. 3 shows a perspective view of the two parts of the coupling.

A is an outer casing, which is made of light sheet metal in suitable lengths, and B is the pottery lining-tube which forms the chimney proper. This inner tube is secured within the outer one by a surrounding body of ceinent, which isl poured in around it, and, lling the space, holds it firmly in place. In sections which are to receive stove-pipes, a short tube, C, projects horizontally from the section, and is lined with an inner pottery tube, D, having a bead er stop, d, at the lend which connects with the chimney. lThis bead projects inward and serves as a stop'to prevent the pipe being thrust in too far.

At the outer ends of the sections I have rings or thimbles, a, of castiron, iitting into the end of section, so that any size stove-pipe can be used and iit tight in thimble.

In order to join the ends of the sections and form a rigid chimney, the upper ends of each section have a cast-iron ring, E, riveted to them, having sectional flanges F projecting inward around their upper periphery. The lower ends have rings G riveted to them, having corresponding outwardly-projecting lips or langes, H, which may be introduced` between the sections F and then turned until they are firmly locked together. The ends of the pottery pipes within will meet and thus form a continuous tube, and any number may be set up to make a chimney of any desired height, which will be firm and rigid. Wherever this chimney passes .through wooden doors, I employ cast-iron plates having holes in the center sufficiently large to admit the pipes. These plates are fastened to the iioor, which is cut out larger than the pipe, and thus support the latter out of contact with theV wood-work.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a chimney, the sections 'consisting of the outer casings, A, with the flangeless cement or pottery tubes secured within them, in combination with the coupling-rings having interlocking flanges independent from the pottery tubes, substantially as herein described.

2. In a chimney, and in combination with` the smoke-flue, the short section C, with its ilangeless pottery or cement lining, and the inwardly-projecting bead d, substantially as and for the purpose herein described.

In witness whereof I hereunto set my hand.

LEONARD E. GLAWSON. IVitnesses:

C. D. COLE, J. H. BLOOD. 

